Add a test that Py_IsInitialized() in Py_InitModule4().  See python-dev discussion.
Add a test that Py_IsInitialized() in Py_InitModule4().  See
python-dev discussion.

This should catch future version incompatibilities on Windows.  Alas,
this doesn't help for 1.5 vs. 1.6; but it will help for 1.6 vs. 2.0.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator